Both teams are close to each other and Marseille got only one point more than Lens however Marseille started the season better than Lens if I'm not wrong they had collected more points at the beginning of this season, While PSG is far from them I think the main competition in the French league in between Marseille and Lens for second place of the table.
The competitions become even stricted since there was only 1 spot is still remaining for marseille and lens. Im thinking about lens may possible to take over marseille at the end of season. Seeing how consistent lens makes me believe if it can happen.
The third position was not so bad at all consider the gap to the monaco is quite big at this moment. Lens has 5 points gap to the monaco. Staying at the end of a season in the third place will give lens a chance to participated in the qualifier for UCL.
It will be better if lens will be able to get guaranteed spot for UCL rather than participating in the UCL qualified. Lens to be even more consistent with its performance until the end of season. Winning all of the matches until end of season is a must for lens right now.